-Hayes ancient tea, also known as Liuhu ancient tea, Beihai Hayes ancient tea and Guangxi Hayes ancient tea, is the ancient tea of the Maritime Silk Road and the earliest exported tea in China. It originated from Daliangshan Mountain in Beihai, Liu Hu, and is called Haisi ancient tea, because it is exported overseas through the port of origin of the Maritime Silk Road. Guo Tianying, the 12th generation descendant of Hayes ancient tea, wrote Poetry of Hayes Ancient Tea, and his team wrote papers such as Research on Hayes Ancient Tea Culture. Guangxi Hayes Ancient Tea Co., Ltd. is located in Beihai City, and is a cultural tea enterprise that develops and professionally manages Hayes Ancient Tea brand.

Haisi Ancient Tea is the exclusive brand of Guangxi Haisi Ancient Tea Co., Ltd., and has registered a series of trademarks such as Beibuwan Haisi Ancient Tea, Liuhu Ancient Tea and Liuhuyin Tea. Hayes ancient tea includes two series: Hayes ancient tea and Beihai silver tea.

Hayes ancient tea series includes Blue Hayes Road, Cupboard Army, Beihai Tourism Memorial Tea, Beihai Sidao Tea and so on. Beihai silver tea series includes heirloom, tea cube and so on. Beihai tourists can visit the direct store of Hayes ancient tea located in Sichuan South Road, learn about Hayes ancient tea culture and experience the four major teas in Beihai.